Question

rationalise the dominator of √2/8+5√2​

Answer 1

$\frac{2}{8 + 5 \sqrt{2} } \times \frac{8 - 5 \sqrt{2} }{8 - 5 \sqrt{2} } \\ = \frac{2 \times (8 - 5 \sqrt{2} )}{64 - 50} \\ = \frac{8 - 5 \sqrt{2} }{7}$

Answer 2

Answer:

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